<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.4.1/dist/css/bootstrap.min.css">
    <style>
        body {
            background: url("image/9.jpg") no-repeat;
            background-size: cover;
        }

        .box1{
            width: 400px;
            height: 320px;
            margin-top: 100px;
            background-color: white;
            position: absolute;
           
            left: 50%;
            margin-left: -200px;
            top: 30%;
          

        }

        .d1 {
            height: 50px;
            line-height: 50px;
            text-align: center;
            font-size: 20px;

        }

        .d2 {
            margin-top: 30px;
        }

        input {
            height: 35px;
            width: 70%;
            border: 1px solid #ccc;
            border-radius: 10px;
            padding-left: 10px;

            outline: none;
        }

        .d2 {
            padding-left: 34px;
        }

        .d3 {
            margin-top: 20px;
            margin-left: 35px;
        }

        .log {
            width: 200px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            background-color: teal;
            border-radius: 10px;
            color: white;
            margin: 10px auto;
        }
    </style>
</head>

<body>
    <div class="box  col">
        <div class="box1 col-md-12  col-sm-12 col-lg-12 ">
            <div class="d1">普通用户</div>
            <div class="d2"> <input placeholder="username" /></div>
            <div class="d2"> <input placeholder="password" /></div>
            <div class="d3"><img src="image/记住密码.png " />记住密码</div>
            <div class="log">登录</div>

        </div>
   </div>
     <script src="https://cdn.jsdelivr.net/npm/jquery@3.4.1/dist/jquery.slim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.4.1/dist/js/bootstrap.min.js"></script>
</body>

</html>